Figure 6. REE discriminant diagrams for zircons. a - Y vs U in ppm and b -Y in ppm vs Yb/Gd jointly characterise the type of granitoid as a granodiorite and tonalite after [3] where 1 = Aplites leucogranite, 2 = granites and 3 = granodiorites and tonalites. c - U vs Th in ppm. d - Ce/Sm vs Yb/Gd chracterise the source of the granitoid as crustal after [42]

From

New LA-ICP-MS U-Pb Ages, Lu-Hf Systematics and REE Characterization of Zircons from a Granitic Pluton in the Betare Oya Gold District, SE Cameroon

Kevin I. Ateh, Cheo E. Suh, Elisha M. Shemang, A. Vishiti, Enerst Tata, Nelson N. Chombong

Journal of Geosciences and Geomatics. 2017, 5(6), 267-283 doi:10.12691/jgg-5-6-2